You are using the same DAC as me, the Oppo BDP-105. For the money it's unbeatable but in my system it's third choice quality for playback source.
If I had digital only I would absolutely upgrade but I cannot tell you what would work because I have not found it myself. I had a couple of the hot cheap DACs here this last month and they were better and worse than the Oppo depending on listening preference.
You will likely have to spend some serious money to get a super quality DAC. This seems to be an area where the best is in great dispute and there are countless "good to great" DACs in the race with no clear winner. At least not that I'm aware of.
You ask about other weak links. Looking at your listening room it may be your only choice but it's not ideal. Putting the system on a short wall and listening at greater distance and some room treatments would be a completely different world.
After that address cable or whatever else.
If I had digital only I would absolutely upgrade but I cannot tell you what would work because I have not found it myself. I had a couple of the hot cheap DACs here this last month and they were better and worse than the Oppo depending on listening preference.
You will likely have to spend some serious money to get a super quality DAC. This seems to be an area where the best is in great dispute and there are countless "good to great" DACs in the race with no clear winner. At least not that I'm aware of.
You ask about other weak links. Looking at your listening room it may be your only choice but it's not ideal. Putting the system on a short wall and listening at greater distance and some room treatments would be a completely different world.
After that address cable or whatever else.